Re: Calibration Problems on new Xerox Phaser 7760s
Re: Calibration Problems on new Xerox Phaser 7760s
- Subject: Re: Calibration Problems on new Xerox Phaser 7760s
- From: Joseph Yates <email@hidden>
- Date: Mon, 04 Jun 2007 22:58:20 -1000
On 6/4/07 7:32 PM, "Karsten Krüger" <email@hidden> wrote:
> Basically there are two different things to do:
>
> Linearization (day to day, week to week)
> - keeps the printer stable day to day
> - done with the standard PhaserMatch software
> - best with an EyeOne
> - should be performed on the same paper every time
Right - this is exactly what we are doing. Daily linerization/calibration
with the PhaserMatch 4.0 software with EyeOne on the same OB free white
paper stock. All 3 printers exactly same settings.
Shouldn't the PhaserMatch calibration then bring the printer back in line to
within a close match of the Lab target values of the printed chart?
And thus all 3 should color match since all 3 are being calibrated to the
same Lab target values?
But by examining the exported PhaserMatch measurements I can see that
numerically the DeltaEs of each printer are far off from each other
> Profiling (once in theory, but depends on your quality requirements)
> - printers differ. So there has to be a way to get them into the same
> gamut.
> - PhaserMatch provides some simple mechanism to create profiles,
Actually - PhaserMatch only provides a way to create Device Link Profiles
from standard Phaser or Third Party generated profiles.
> but tools like ProfileMaker and basICColor do a way better job
Yes - we are using ProfileMakerPro or EyeOne Match to create the Phaser
custom profiles.
> - PhaserMatch uses a kind of device link profiles, which need to be
> generated for each printer separately:
> + linearise your printers
Right - see my comments above. Not so sure I am trusting the
linerization/calibration capabilities of the PhaserMatch software - and thus
not sure about the resulting profiles & device link profiles that come in
the following steps
> + Profile your printers (Phaser1.icc, Phaser2.icc etc)
> + Select your simulation profile (like SWOP, ISOcoated v2)
> + Create the device link profiles for each printer for this
> simulation
> (like SWOP_Phaser1, SWOP_Phaser2 etc.)
> + Download these Profiles to the printer's memory
>
> Hope this helps,
> Karsten
It does - if only to confirm I've done the recommended procedure to color
match these laser beasts.
Joseph Yates | Pacifica Island Art | Maui, Hawaii
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